Which carbon atom of glucose,numbered from $C-1$ to $C-6$,converts its functional group to a $-COOH$ group when heated with $Br_2$ water?

Which among the following is a natural biopolymer of monosaccharides?

Which of the following is a pentose sugar?

The optical rotation of the $\alpha$-form of a pyranose is $+150.7^{\circ}$,that of the $\beta$-form is $+52.8^{\circ}$. In solution,an equilibrium mixture of these anomers has an optical rotation of $+80.2^{\circ}$. The percentage of the $\alpha$-form in the equilibrium mixture is $....... \%$.

Hydrolysis of a disaccharide gives .......

The disaccharide present in milk is